<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <table border="1" cellspacing="0" width="400px">
      <tr>
        <th>讲师名称</th>
        <th>所教班级</th>
      </tr>
      <tr>
        <td>臧老师</td>
        <td>Java250701</td>
      </tr>
      <tr>
        <td>崔老师</td>
        <td>Java250702</td>
      </tr>
      <tr>
        <td>高老师</td>
        <td>Java250703</td>
      </tr>
    </table>

    <table border="1" cellspacing="0" width="400px">
      <tr>
        <th>讲师名称</th>
        <th>所教班级</th>
      </tr>
      <tr>
        <td rowspan="2">臧老师</td>
        <td>Java250701</td>
      </tr>
      <tr>
       <!-- <td>崔老师</td>-->
        <td>Java250702</td>
      </tr>
      <tr>
        <td>高老师</td>
        <td>Java250703</td>
      </tr>
    </table>

    <table border="1" cellspacing="0" width="400px">
      <tr>
        <th>讲师名称</th>
        <th>所教班级</th>
      </tr>
      <tr>
        <td colspan="2">臧老师</td>
       <!-- <td>Java250701</td>-->
      </tr>
      <tr>
        <td>崔老师</td>
        <td>Java250702</td>
      </tr>
      <tr>
        <td>高老师</td>
        <td>Java250703</td>
      </tr>
    </table>
    <br>
    <br>
    <table border="1" cellspacing="0" width="400px">
      <tr>
        <td>ID</td>
        <td>姓名</td>
        <td>年龄</td>
        <td>性别</td>
        <td>删除</td>
      </tr>
      <tr>
        <td>1</td>
        <td>zhangsan</td>
        <td>23</td>
        <td>男</td>
        <td>删除</td>
      </tr>
      <tr>
        <td>2</td>
        <td>lisi</td>
        <td>24</td>
        <td>女</td>
        <td>删除</td>
      </tr>
      <tr>
        <td>3</td>
        <td>wangwu</td>
        <td>25</td>
        <td>男</td>
        <td>删除</td>
      </tr>
    </table>
</body>
</html>